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September Weather in Dillingham, United States

Last updated: June 24, 2025

In September, the average temperature in Dillingham, United States hovers around 10°C (50°F), with a minimum dropping to -3°C (26°F) and a maximum reaching 20°C (69°F). This month sees an average precipitation of 104 mm (4.1 in) over approximately 15 days, coupled with a high average humidity of 92%. Prepare for a cool and damp atmosphere!

September Temperature in Dillingham

In September in Dillingham, the average temperature is 10°C (50°F). Maximums can reach 20°C (69°F) and minimums can be as low as -3°C (26°F). It's a great time to visit Dillingham if you enjoy mild weather with the chance of a cool breeze, so be sure to pack accordingly!

September Weather in Dillingham: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Dillingham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dillingham, September typically has an average temperature of 10°C (50°F), with highs reaching up to 20°C (69°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec142123354654595649402521
Data source: Temperature data for Dillingham generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Dillingham

In Dillingham in September, the precipitation amount is 104 mm (4.1 in) over a span of 15 days.

September Precipitation Trends in Dillingham

The chart displays monthly precipitation patterns in Dillingham, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Dillingham, September typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec527565579571548110413082105
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Dillingham

In Dillingham in September humidity is 92%. With an average temperature of 10°C (50°F), this humidity feels like a chilly, damp cloak wrapping around you, making every step outside feel heavy and each breath a bit more labored, turning exploring into an uncomfortable challenge.

September Average Humidity in Dillingham

This chart illustrates the average monthly humidity levels in Dillingham, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Dillingham is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%95%87%80%79%88%89%92%92%88%91%95%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Dillingham

In Dillingham in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Dillingham for better planning.

Maximum UV Index Levels in Dillingham for September

The chart shows the monthly maximum UV Index (UVI) for Dillingham in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Dillingham typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124566664211
Data source: Dillingham September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Dillingham Compares to Other Months

Weather in Dillingham varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Dillingham, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Dillingham, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (15°F)52 mm (2.1 inches)95%low
February Weather-6°C (21°F)75 mm (3.0 inches)94%low
March Weather-5°C (23°F)65 mm (2.6 inches)87%moderate
April Weather2°C (36°F)57 mm (2.2 inches)80%moderate
May Weather8°C (46°F)95 mm (3.8 inches)79%high
June Weather12°C (54°F)71 mm (2.8 inches)88%high
July Weather15°C (59°F)54 mm (2.1 inches)89%high
August Weather14°C (57°F)81 mm (3.2 inches)92%high
September Weather10°C (50°F)104 mm (4.1 inches)92%moderate
October Weather4°C (40°F)129 mm (5.1 inches)88%low
November Weather-4°C (25°F)82 mm (3.2 inches)91%low
December Weather-6°C (21°F)105 mm (4.1 inches)95%low

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